<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>CSS入门案例</title>

    <!--内部样式-->
    <style>
        div{
            color: blue;
            font-size: xx-small;
        }
    </style>

    <!--外部样式-->
    <link rel="stylesheet" href="css/01.css">
</head>
<body>
    <!--内联样式-->
    <div style="color: red;font-size: xx-large" >
        查看样式
    </div>
</body>
</html>